Carriage Bolts, A307 Grade A (inch)
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Carriage bolts are best known for their smooth, rounded head. They also feature a square neck just below the head to prevent bolts from turning or vibrating loose after being installed. The A307 grade A Carriage bolts offer a minimum tensile strength of 60,000PSI. Choose the best plating for your specific needs, offered in plain steel, zinc, zinc yellow and hot dipped galvanized.